This is a story I had for a while and thought to write it which includes Rocket Raccoon and Groot. Hopefully you guys like it.

Rocket Raccoon and Groot belongs to Marvel.

During their shifts at the mechanic shop, Rocket and Groot have an argument that goes from insults to accidentally blowing up the small raccoon into a big one.
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There’s a strange line between being galactic space bounty hunters with a ton of weapons and a motive to be rich and being a raccoon and a tree trying to do a simple job while they have to wait for a new mission to appear. Rocket hated the second part for a good reason. As an engineer who has worked on many parts on his ship, including upgrades, being a mechanic at an autoshop on Earth wasn’t what he was hoping for. Not only is it boring and dull for him, but the pay is too low for his style. He could make a million bucks just by hunting a wanted criminal down in less than a day. During the interview, the manager wasn’t sure what they were or where they came from. The guy needed employees and so far they’re the only ones, or Rocket, with engineering experience with motors. With grunts and mummers about how he regrets putting on that full blue mechanic outfit with straps and buttons, and a nametag that just says Rocket, he was working on a flat tire of a minivan that was covered in dirt and scratch marks. “Do these people treat their stuff this bad?” Rocket complains, hoping that it’s only the flat tire he has to do. “It’s like they see it as someone else’s cars rather than their own!” He looks over at Groot, full adult size, playing around with a wrech he picked up from the workbench. “Groot!” He calls his name in annoyance due to the tree’s observant mind to objects that are shiny.

“I am Groot?” He asks about what Rocket wants. The poor creature wasn’t too familiar with this world, nor what kinds of things it has in store. Not to mention that he heard rumors of what these people do to the trees, fearing that the people could mistake him for one of their own.

“Are you even helping?” Rocket asks back, fidgeting with the hole in the tire. “Just give me the duct tape.” Rocket says as it’s one way he knows how to solve a flat tire since he’s rarely seen cars, nor drives them.

Groot scratches his head in confusion. He has no idea what duct tape is, or what it looks like as he searches the room for one though there is a whole pack hanging on one of the racks on the wall. “I am Groot.” He said, saying that he can’t find it.

“Grrrrraahhh!” The raccoon wanted to scream louder than that, both irritated and annoyed with the job. He doesn’t want to blame Groot for it all, he’s just not that familiar with Earth. “I got it…” He grits his teeth, stomping all the way over to the wall where Groot stands and grabs the tape from the rack. Surely tape could fix the hole from whatever caused it to rip the rubber. “I swear, we could have done anything else besides this. This is the perfect job, Peter said. It will be easy, Peter said!” Peter Quill AKA Star Lord is one of the members of the guardians of the galaxy, and a mutual friend to Rocket as he now recalls that it was his idea for Rocket and Groot to try out jobs in his home planet. If only Rocket had thought about saying no earlier, they wouldn’t be in this mess. “When we get back, I’m gonna maul his bed into shreds.” As he has done it a couple of times to where Peter wouldn’t even care about it.

Groot was sure that Rocket could blast someone into dust if he was angered anymore. Just filled with rage and regret that nothing on Earth matters for him. “I am Groot.” Groot said, telling him that he needs to calm down and focus with the tire. “I am Groot.” He also said that he’ll make sure Rocket doesn’t hurt his sharp teeth on the metal pieces that Peter might put in his pillow case for when Rocket does do it. Last time that happened, Rocket almost broke his teeth and thought about not doing it ever again if Groot wasn’t there to warn him the next time after that.

“I know. It’s a stupid thing he does.” Rocket sighs as he finishes with the tape and goes over for the air tank. He hugs it around his waist and tries to pick it up, though it was about his height and a bit too heavy for him to lift. “Hey Groot, help me carry this over to the van.” He requests. The tree uses one hand to carry the air tank over to the van where he drops it on the ground, not gently at all. “Hey! Careful with that!” Rocket warns him as he carefully lifts it back on its bottom. “It’s not indestructible.”

“I am Groot.” He apologizes with shame. It frustrates him that he doesn’t know what is strong and what is not in this world. Just hours ago, he had accidentally smashed a glass window from a car that needed a new windshield because he thought that glass would be stronger than the ones from their ship.

“Just….listen to what I say.” Rocket grabs the hose attached to the air tank and clips the nozzle to the little metal piece where the air will flow through. Once that was locked on, Rocket turns the valve on the air tank and hears the sound of air hissing. Slowly, the tire begins to inflate but Rocket could help but to remember that he was once an inflated balloon, many times if he can recall. Mostly it was just because he wanted to impress his girlfriend, Lylla since she had tons of experience with this too. He would do it privately when he’s alone or with Lylla when she comes over to his ship. Just as if everything was going smoothly, the pressure of the air inside blows the tape off and the tire deflates once again. “Are you kidding me? What do I need to do to fix this stupid tire!?” Luckily, he brought his book with information on vehicles in case he needs to review anything that doesn’t seem too familiar with him. He turns a couple of pages to where he reads about tires and how to fix them. “Ohhh, I’m supposed to change out the tire.” Slapping his forehead, he closes his book and tosses it on the ground. “Do we have any spare tires, Groot?”

“I am Groot?” He asks if Rocket even knows how to take out the tire.

“Of course I know how! It’s simple! Unless you wanna try inflating it yourself with duct tape like I just did!” Rocket lashes out at him, infuriated with Groot doubting his skills.

Groot grumbles before he says something very offensive towards Rocket. “I am Groot.” He told Rocket that his ego was inflated, too much.

Rocket gasps and shouts, “Excuse me!? What do you mean I have an inflated ego!?” Never had Groot ever pointed that out, though it has been shown many times during their missions and trips. “I’ll have you know that I’m not a raccoon of pride! We came here so we can get some cash while we wait on our mission!” It was true, that’s why they were here. But that doesn’t help the fact that Groot knows a ton about the actions Rocket has committed. Like the fact how the furry animal believes that he knows a ton about Earth’s knowledge and history. Maybe he had been studying, but Groot knows that he would rather blast some guns rather than acknowledge the planet, no matter how many times he’s been here.
With Rocket defending himself, Groot was sure he was getting onto him. “I am Groot.” Groot said that Rocket would surely try something stupid and blame it on anything but him.

“Oh really!? You think I’m stupid!?” Rocket shouts at him. He was just seconds away from losing it. One of the things that he really hates the most is someone calling him stupid. Rocket is a genius and even if he gets into situations that aren’t his best benefit nor skill-like.

For a while, Groot doesn’t respond back. Rocket thinks that he got him to shut up finally but he was wrong. “I am Groot.” In the words quote on quote from the tree. [And fat too.]

That was the last straw. Rocket snapped his jaws and screamed, “Fat!? That’s it, you piece of wood!” He might not have that six pack, but he was nowhere to be chubby from outside his clothes. Climbing the hood of the van, he uses it as his lunging point and goes straight for Groot’s arm, grabbing it with both of his sharpened claws. Using his teeth, he bites down on the wood like a mad beaver. Rocket believes it was going to do some damage but Groot just stands there, unfazed, feeling nothing but the slightest ticklish, and with no idea how to handle a very violent and angry raccoon. “Grrrrr! Take that!” He said with aggression, still biting down on the wood, though it may hurt him more than it hurts Groot. Still, the tree gets annoyed with how Rocket has been acting for these past few minutes. Maybe the raccoon needs something else to bite down on rather than his arm. Looking around, finding something that is soft enough but unbreakable to chew on, Groot finally gets an idea. The rubber hose from earlier that’s attached to the tank should do the trick in his mind, but the reality is worse. He yanks the hose out of the flat tire, still running with air, and times it just right to where when Rocket widens his mouth, Groot shoves the hose in. “Groot! W-wait!” He realizes what Groot was trying to do, the poor tree not understanding the mechanisms of the air tank as it’s still on. Worse is when Groot uses the duct tape to shut his snout close because he didn’t want Rocket to spit the hose out and go for his arm again.

“I am Groot.” He tells the shocked raccoon that he can chew on that instead. He looks back at his arm to see the bite marks made on it, quickly disappearing as he heals himself. Unfortunately for Rocket, he can feel his cheeks filling up with air as it slides down his throat, expanding it.

“Mmmffhh!” Rocket couldn’t speak at all so there was no way that he could tell him the issue with this. Then, it came. Suddenly feeling full, he looks down to see his midsection rounding and inflating inside of his suit. Rocket is swelling up into a balloon. Yet from all of those times he’s been inflated before, he’s still worried about it. Making deep inhales and exhales, he watches as it sizens it up to a basketball, pregnant almost. “Mmmmfh!” He still muffled, hoping that Groot would understand what was happening. Rocket tries to yank the hose out of him first, only to find out that the tape has it stuck on for good, and the tape would come off either.

The tree wants to ignore Rocket, assuming that he’s still angry about him with that insult. But he does look back to him and Groot now looks at him strangely and utterly confused. “I am Groot?” He asks why Rocket was fat already, still growing. The raccoon’s thighs, sides, and butt in which Rocket is more embarrassed about, swells up along. In a heavy bottom size, his mechanic suit stretches and groans. The straps on his front creaks and groans, containing Rocket’s growing body as it tightens around them. “I am Groot?” He has no idea what was going on with Rocket or why he was growing.

“Mmmf! Mfh!” He points at the air tank, trying to get him to turn it off for him since his walking movement is limited by his thighs bloating and rounding up. All he could do was waddle.

It took Groot a second to realize what he had just done. Just like with the tire he saw Rocket inflating, Rocket was blowing up. “I am Groot!” He panics and apologizes, worried that something bad might happen to his buddy if he doesn’t save him. “I am Groot?” He asks how he can stop it. Rocket’s first thought was to turn off the tank rather than help him with the tape, so he points at the tank again and does a hand gesture of twisting the valve. Hopefully Groot knows what a valve is. The tree nods, understanding what he means when he tells him to turn off the tank. So Groot hurries over to the tank and puts his hand on the valve of the tank. What sucks about his strength is that when he twists it quickly, the valve snaps off. “I am Groot!” He apologizes again to Rocket, telling him the valve broke off.

Rocket’s eyes widened again once he saw the broken valve in Groot’s hand and the fact that the air tank was still on. “MFH!?” Now that was a very huge problem for a huge raccoon. WIth his body beginning to round, the straps on his suit finally snaps off and makes more room for his belly to grow. His arms puff up to where they stiff out on his sides, T-pose style, and his paws and feet fill up with air, each of his toes and fingers turning into medium sized grapes. Though, Rocket was feeling something else. He was beginning to like it. His muffling becomes relaxed muffles, his face turning red from not only the embarrassment but from flustreness. If he could move his arms again, he would have certainly rubbed his own swelling belly.

Even Groot could see that his reaction had changed. “I am Groot?” He asks Rocket if he was enjoying this. Only a small whine and a look away expression got Groot his answer. The tree carefully pokes Rocket’s belly in where Rocket huffs deeply. The suit still creaks and stretches but doesn't break, even the buttons spreading apart from each other that the gaps between them show his fur. It was at the point where Rocket’s body was so round that his limbs were sinking into his orb-shaped body, along with his head too. Then with the sounds of groaning and creaking coming from the raccoon’s taut body, it wouldn’t be long until he explodes. Though Groot has enough of watching his friend grow, so he carefully pulls on the tape and unwraps it enough for Rocket to spit out the hose.

Rocket was happy that he could speak again. “Oh god….so….tight!” He groans and whines, but loves it alot. “G-Groot! I know i-it may seem strange but-”

“I am Groot?” Again, he asks if Rocket loved to inflate judging by his previous expressions.

Rocket couldn’t lie to him, not when he put himself through this mess. Though he wanted to keep it a secret besides Lylla, it seems like Groot now knows too. “Y-yeah. It’s a bit….complicated. Lylla helped me with it, and I do enjoy it sometimes.” Ashamed, he felt like Groot may not like it though. He was panicking throughout the entire thing, unless that was because the tree had no idea what was happening or why it happened. “Sorry that I…NRGH…attacked you.” If he didn’t feel the pain of his tight belly, he would have spoken better without any pauses or interruptions.

“I am Groot.” He says that he’s sorry for calling him stupid and fat. As an apology, Groot rubs Rocket’s creaking body since he does love the belly rubs Groot gives him.

“Mmmmmm, that’s good. A little higher please.” Rocket says, softly chuckling and moving his wrists and feet. “Though I would like to ask if you can deflate me soon before I pop like a balloon.”

“I am Groot?” He has no idea what the phrase, pop like a balloon means since he doesn’t know what a balloon is or how it pops.

“Eh, let’s say that if a couple more pumps into me and I’ll be turned into scraps.” Another phrase that Groot doesn’t understand. The tree scratches his head with no idea what Rocket was talking about. “Nevermind, bud. Just keep giving me those belly rubs.”

Before Groot does that, he gives him a big hug. Wrapping his long arms around the round raccoon’s body, who’s almost the same height as the tree himself. “I am Groot.” A gentle and warm smile appears on both of their faces after what Groot has said to him.

“I love you too, buddy.” Rocket knew that Groot is always his best friend to the end, a friendship that could never be broken no matter how much they argue or fight. The question does remain if Groot would accept Rocket’s hobby or not. Maybe he will accept it and see how big his buddy can get. There is one thing that they both know, they’re going to get fired after their boss sees this soon.